Changing the shortcut for highlighting text in Preview

How do I change the keyboard shortcut for highlighting text in Preview (OS X Yosemite)? By default it is Ctrl+Command+H, but I'd prefer a different combination (maybe Ctrl+E) as that’s easier to use. However, the following method does not work. How do I resolve this?

In OS X El Capitan 10.11.4 - macOS Catalina (10.15), you are able to set up a custom shortcut like this:

1. Open the Preview app.

2. Enter Preview -> Services -> Services Preferences

   

3. Choose App Shortcuts

   

4. Click on the + button and the fill in the fields like below. It is important that the Menu Title perfectly matches the operation name to which you want to assign the shortcut.

   

5. Done. Now you can highlight text in Preview using your custom shortcut.

   

For nested menu items, separate the menu levels with -> without any spaces. You also have to include the top-level menu item. In this case that would be:

Tools->Annotate->Highlight Text

If Highlight Text is a unique menu item in Preview, you can also just use Highlight Text and omit the rest.